#1
The D string in my guitar has just broken and since it's Sunday I can't go to the shop and buy a new one (I guess I'll just replace the whole set anyway). I've decided to use this situation to learn something new, so here is a question:

Are there any chords, which don't contain any sounds played on the D string at all?
You know, just like there are chords not using the A string?
#3
Power chords on the 5th and 6th strings*, and octave chords as mentioned earlier.

*if you do power chords with only two strings, not 3 strings
#4
get some theory and learn to do a voicelead then you can play all minor and major chords using only your high E,B and G string
Ibanez RGA 8 (Dimarzio D Activator 8)->Rocktron Hush->Engl E530 preamp->Marshall 9200 poweramp->Marshall 4x12 closed back cab w/ G12t75's